public class Solution1832 {
    public boolean checkIfPangram(String sentence) {
        for (int i = 0; i < 26; i++) {
            if (!sentence.contains((char)('a'+i)+"")){
                return false;
            }
        }
        return true;
    }

    public static void main(String[] args) {
        System.out.println(new Solution1832().checkIfPangram("thequickbrownfoxjumpsoverthelazydog"));
    }
}
